TInsertType in table() methods on Dexie and Transaction (#1998)

* TInsertType in table() methods on Dexie and Transaction

* Testing that typings of table-props works also on transactions.

src/public/types/dexie.d.ts

@@ -50,7 +50,7 @@ export interface Dexie {
 
   open(): PromiseExtended<Dexie>;
 
-  table<T = any, TKey = IndexableType>(tableName: string): Table<T, TKey>;
+  table<T = any, TKey = IndexableType, TInsertType=T>(tableName: string): Table<T, TKey, TInsertType>;
 
   transaction<U>(
     mode: TransactionMode,

src/public/types/transaction.d.ts

@@ -16,4 +16,5 @@ export interface Transaction {
   table(tableName: string): Table<any, any>;
   table<T>(tableName: string): Table<T, any>;
   table<T, Key>(tableName: string): Table<T, Key>;
+  table<T, Key, TInsertType>(tableName: string): Table<T, Key, TInsertType>;
 }

test/typings-test/test-typings.ts

@@ -3,7 +3,7 @@
  * It tests Dexie.d.ts.
  */
 
-import Dexie, { IndexableType, Table, replacePrefix } from '../../dist/dexie'; // Imports the source Dexie.d.ts file
+import Dexie, { EntityTable, IndexableType, Table, replacePrefix } from '../../dist/dexie'; // Imports the source Dexie.d.ts file
 import './test-extend-dexie';
 import './test-updatespec';
 
@@ -275,3 +275,23 @@ import './test-updatespec';
 
     db.friends.where({name: 'Kalle'}).modify({name: replacePrefix('K', 'C')});
 }
+
+
+{
+    // Typings for tables in both Dexie and Transaction
+    interface Friend {
+        id: number;
+        name: string;
+        age: number;
+    }
+
+    const db = new Dexie('dbname') as Dexie & {
+        friends: EntityTable<Friend, 'id'>;
+        items: Table<{id: number, name: string}, number>;
+    }
+
+    db.friends.add({name: "Foo", age: 22});
+    db.transaction('rw', db.friends, tx => {
+        tx.friends.add({name: "Bar", age: 33});
+    })
+}